AN: this is just something that popped in my head and wouldn't go away. So I finally wrote it. This Lily is a different Lily that in any of my other fics, a little bit darker and meaner. Anyway, R&R.

Unclean

She is invisible to him.

He never notices her, he hears her name, sees her from time to time but it means nothing. She is just another teacher's pet, another mudblood. It is not until he sees Snape's eyes lingering on her, his gaze traveling her way that Regulus notices.

She is beautiful.

Red hair that whips around her in the wind, hot green eyes and full, plump red lips. Creamy skin with just the barest hint of freckles, only enough to let the mind wonder where else those freckles may be besides her face. Her body is one meant to be worshiped, soft curves that are always hidden behind modest clothes. Always, always hidden.

If she were a color, she would be red. Bold and undeniable. She is desire incarnate, sin personified. Her eyes spit fire and her tongue lashes out. Her temper is hot like a flame licking through a forest. It is her innocence that mares that perfection, that perfect burning fire. That fire could be used for anything, to burn the world and laugh as it falls down around her. Instead she wastes it on self-righteous anger, on fighting for her just causes and beliefs. Her moral fiber is unbreakable and it is a shame, because she truly could have been something special.

He wants her. He is not foolish enough to attach any sort of romantic fantasy to this, he wants her in the basest of ways. He wants to see that fire burn in her eyes, to spark at him, to engulf him. He wants to take that spirit and break it, to bring her to submission. Such a spirit should not be wasted on one so unclean.

It is exactly what she is: unclean, filth, garbage. Of lowly birth and lowly blood. If she were not, he would have her. If the blood that dances in her vein were pure he would take her and make her his own. He would pick her like the forbidden fruit she is and drain all her sweet juices until she is dry and rotten as he.

She infuriates him. Even her name alone Lily Evans laces the anger tighter around his heart. She taunts and teases him without ever knowing. Every smile and every laugh sends a shiver down his spine and a tug in his groin. There is a hidden cruelness in her eyes that he sometimes sees, it is revealed in the way she rejects his idiot brother's friend, the way she discards his advances. She thinks them both great fools, she dares to think they are immoral. He wonders exactly what she would think of him.

Seeing her scream is the most exciting, and only his chump of a brother or his simpleton friend Potter can quite manage it. Her cheeks turn the most lovely shade of pink, her eyes burning brighter than ever before. She is truly exquisite when angry. Regulus wishes he could have that anger turned on him, to see her unleash that poison on him. There is darkness inside her, darkness that she hides so well but he sees, he knows darkness when he sees it and for all of her innocence it is in her. More so than in that slob Potter.

It is a shame that she seems to be warming up to him, because he is no match for her. Perhaps he is equal in wit, but not in spirit. The darkness that is buried in her soul is far greater than his. His brother's matches her own. Regulus is not nearly the half-wit his brother believes and he knows Sirius left home not to escape the evil of his family, but that inside himself. As much as he denies it, he is a Black through and through and no matter how far he runs, there will always be a bit of blackness tainting his soul.

Regulus is also not blind, he sees the gazes of the boys upon her. His has seen his own brothers eyes stray her way when Potter is not looking. They always did have similar tastes in women. Though Regulus can see they are also both living by a 'look but don't touch' rule.

Rules, however, are meant to be broken.

The first time he considers is it is while speaking to Snape. He hardly ever associates with the older boy, his blood less than pure. But he was once Lily's closest confidant and Regulus is curious. All he does is mention that it is a shame that Severus had to realize what filth Evans was before he got the chance to fuck her. He adds that it would be alright for someone like Snape to screw her, his being a half-blood. Snape nearly curses him, before he regains his composure.

Considering her dearest friend who was madly in love with her (as Regulus has no doubt Snape was and still is) never got close, Regulus is sure his chances are slim to none. But he is a Black and Black's always get what they want.

His opportunity arises one night while he is roaming the halls, bored and restless. He finds himself nearer the Gryffindor hall than he intended and is pleasantly surprised to see a blaze of red coming toward him. Her face is pink and her eyes are narrowed, her steps long strides. She stops when she sees him, her gaze hardening even more so.

“Sirius isn't here.” she says briskly, moving toward the portrait of the fat lady. She is angry about something, he can see that and he idly wonders what poor slob had to face her wrath.

“What makes you think I'm here for him?” he drawls, Lily casting him an annoyed glance.

“What else would you be here for?” she replies shortly, as though she hardly has the time for talking to him. As if he is a nuisance, a thorn in her side. As if she is superior to him, instead of the other way around.

It rises the anger in him up a few notches. This girl could soon have his blood boiling in his veins. Never in his life has he wanted to hurt something so badly. It is the strangest amalgamation of hate and lust. He wants to hit her as much as he wants to caress her.

He allows his eyes to travel slowly over her, over her ever modest clothing where he can see the faint strain of her breasts against her shirt, up to her face with her blazing eyes and her frowning mouth to her flame of red hair. He can imagine running his fingers through that sea of red, twisting it in his hands until it is painful, moving his hands over those luscious curves. He can almost feel those legs wrapped around him, taste the tender flesh on the column of her throat.

Her face flushes pink, her eyes spitting their fire at him as her hand finds her wand and clenches it at her side. “You should go.” she says through gritted teeth.

It is amusing to see her anger, to watch her seethe. He is sure that no man has ever touched her the way he longs to. He wonders the sounds she would make, if that fire of hers would be present in her lovemaking. “You're probably right.” he replies. It is true, she is a mudblood and there is no way to have her. There is always the option of taking her by force, but he is not quite so immoral.

She turns toward the fat lady, ready to say the password and go inside when she sees he is still there, watching her. Her frustration is like a visible, tangible thing. He can practically see it simmering around her. “I thought you were going.”

“I've decided to stay.” he answers simply, allowing his eyes to take her in. There is a jaundice in her eyes, her hate rolling off her in waves. She is known for her kindness, and he suspects it matches her cruelty. It would only be fitting, that she would have both in equal amounts. He can play on her kindness, tell her his woes about his family, spill some drivel about how hard life is now that Sirius is gone, and really, all he wants is for someone to understand him. He has no doubts she would eat it up like candy, never doubting a word. But that will be too simple, and it is not her kindness he wants but her fury.

“This is a dangerous place for a Slytherin.” she says coolly. He smirks at her words. She truly is going to be fun to play with.

“Is that a threat? From Lily Evans, the epitome of kindness and virtue? I have to say, my brother and his friends would be disappointed. It might knock you off that pedestal they've all set you upon.” he says back, Lily's face flushing.

“I hardly care about the opinion of Sirius Black and James Potter.” she snips, but her face is still flushed. Regulus could go as far as to venture that she does care very much indeed.

“Ah, that's right. You hate Potter don't you? And his friends by association. But I'd dare say there is something more than that. I would even say you enjoy hating them. That rejecting him makes you tick. There is a certain sort of satisfaction in blind adoration—it gives one a perfect toy to play with and dispose of upon every whim.” Regulus says, a trace of taunting in his voice.

“Maybe you see others as toys that can be disposed of, but I don't.” she defends. He smiles at her and takes a step closer. Her wand points up slightly, nearly making him laugh.

“Deny it all you want, but I've watched you. I see you. You pretend to be kind, caring...but it's all a show. Something you do to make yourself feel better. Inside you're as heartless as-” he mocks, but he does not have a chance to tell her what she is as heartless as; her wand rises and she orders shrilly for him to shut up.

Taunting and teasing he can allow, he would even go so far as to let her hit him, if he thought it could lead to some more pleasurable physical assault. However, her attempting to hex him is not something he will tolerate. He catches her by the wrists and propels her backward, slamming her into the wall. Her wand is still held tight in her hand, but he has twisted her wrist so that it is not pointing at him but the ground.

“Let me go.” she snarls, kicking him in the shin. It is a good kick, one that would make him wince another time, if her proximity didn't have him so hot and bothered.

“You should watch that temper Evans. Threatening younger students is hardly becoming of the head girl. Kicking one...you could lose your badge.” he says in a low voice, his mouth very near her ear. He can feel her becoming infuriated. Her heart is beating faster in her chest, her breathing becoming sharp. His body is pressed against hers and he can feel every bit of softness through their robes, can imagine what it would feel like if they were not in the way. All he wants is right here, pinned to the wall beneath him and his for the taking. If only she will allow herself to be taken.

“It'll be my word against yours. Who do you think they'll believe?” she challenges. Finally, there is the cruelness he has been waiting for, the words that prove she is all that he thinks.

“Like I said, you are heartless.” he replies, Lily opening her mouth to say something vile back to him. She never has the chance.

He kisses her before she can reply, slamming his mouth onto hers. It is no kind kiss, no lovers caress. It is an attack, a claiming, a possession. She refuses to budge, holding still in his embrace. It is pride, nothing more. He can feel her heart slamming in her chest, can feel her fighting to restrain herself. He changes tactics, sucking her lower lip and biting her hard enough to draw blood. She gasps and her wand falls to the floor with a clatter. At once her mouth opens beneath his, like a flower coming into bloom. Her tongue swirls around his own and her back arches, pressing her hips into him. His hands leave her wrists and finally get to tangle themselves in the hair he has been dreaming of. He twists it through his fingers, causing her to moan into his mouth. It is no moan of pain, but one of pleasure.

Quite the masochist, she is he thinks to himself, feeling her shudder beneath him. He is about to pull back from kissing her to suggest they find a better place to continue this, when he feels something grab hold of his robes and haul him back. Lily lets out an audible cry, the name spilling from her lips making Regulus cringe.

“Sirius-” she starts, opening and closing her mouth in a manner that is most unattractive.

“Are you alright? Lily, you're bleeding.” Sirius says, eyes focused on her bleeding lip and ignoring his brother for the moment.

“I'm fine-” Lily tries again, but he is hearing none of it.

Sirius turns to Regulus, wand out. “What did you do to her?”

Regulus let out a scoff, looking back to Lily. She has composed herself, her posture straight, her eyes cold. He realizes there will be no help there, not from her. She will never admit to kissing him willingly.

“Sirius don't. I'm fine, there's no need.” she orders, and Regulus is amazed at how plaintive she makes her voice.

“No need? Lily, he attacked you!”

Regulus once may have felt a sting at his brother automatically thinking the worse of him, but those days are long gone. Now he only finds him to be a great fool, to buy this act that Lily is putting on. Not that it isn't a good show, she is a talented actress.

“It was a simple misunderstanding. Your brother and I were having a talk, I was being friendly and he misread the signals. It happens. James himself is guilty of the same crime.” Lily answers calmly. Sirius does not look convinced and Regulus has no illusions that his brother is not itching for a chance to start a fight with him.

“After all, not all boys have such experience with reading signals from the opposite sex. They all can't be as knowledgeable as you.” she adds dryly. Regulus is pleased to see his brother stiffen a little at the disapproval—no boy wants to disappoint the perfect Gryfinndor princess. She is the queen and his brother is just one of her many knights.

“I think we should all go to bed. It is after curfew. Regulus, you should get back to your own house before your prefects notice you are missing. Sirius, do go and fetch James. He is head boy, the least he can do it set an example.” Lily says with ease.

Both boys set off in separate directions, Regulus stopping once he is sure Sirius is out of earshot. “That was a nice show Evans. Of course, my brother is an easy target, not much going for him in the brains department...”

Lily fixes him with a cool gaze, all her fire turned to ice. “Because I'm a nice person, and because Sirius is your brother, I didn't let him give you the beating you deserve. But if you ever come near me again, I'll be sure you get it. And I won't even have to get my hands dirty. I'll have the Marauders do it for me. James would do anything I asked, and the others will do anything he says. So unless you want the four of them making your life hell, I suggest you stay away.”

“You really are a heartless bitch.” Regulus says, slightly impressed by her malice. She would have done well in Slytherin...

With one last final glare, Lily disappeared behind the portrait of the fat lady, never looking back his way.

AN: so I think this is a one-shot. I can't see this pairing going much farther, unless I make it all AU and have Lily go to the dark side or something.